Home / 20,443.17-28,210.79-11,491.05

Finding the Fourth Proportional to 20,443.17, 28,210.79 and 11,491.05

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Solution

The fourth proportional to 20,443.17, 28,210.79 and 11,491.05 is: 15,857.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.17 : 28,210.79 = 11,491.05 : x
  2. Step 2: Convert to fraction form
    20,443.17/28,210.79 = 11,491.05/x
  3. Step 3: Cross multiply
    20,443.17x = 28,210.79 × 11,491.05
  4. Step 4: Simplify right side
    20,443.17x = 324,171,598.43
  5. Step 5: Solve for x
    x = 324,171,598.43/20,443.17
  6. Step 6: Final answer
    x = 15,857.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.